Custom Build

I'm looking at taking my Iron Horse Warrior Pro (2006) totally to pieces and keeping nothing but the frame for a custom build, looking at doing mainly single trail and a little downhill so what do you think I should do with the old girl?
- Marc

Approximately how much would this set me back? And The bike is completely from stock other than a pair of Hayes Hydraulic discs front and rear so all that sounds good to me, the drivetrain will be first on the list though I think.

Approximately how much would this set me back? And The bike is completely from stock other than a pair of Hayes Hydraulic discs front and rear so all that sounds good to me, the drivetrain will be first on the list though I think.

That would be a pretty expensive build.

Fork: ~$400 on ebay
Brakes: ~$150-$200
Tires: ~$100
Wheels: there's a whole range, but probably around $300-$500. If you get DT Swiss, make sure you get something from the M or E lines for a wider internal width. Also look at Sin Ringle Chargers, Stans Flow (or Arch if you're light), that sort of thing.
Drivetrain: $400 on Merlincycles.com
Dropper post: $300

If you're working on a budget, I'd probably lose the dropper post (or save it for later since you've already got a seatpost, presumably) and switch to a SLX drivetrain, which will be closer to $300. You aren't going to be able to get a ~130mm fork worth mentioning for much less than $400 unless you get lucky, SLX brakes are probably the best bang for your buck right now, and I wouldn't spend much less than $300 on a wheelset capable of doing trail/light DH crossover.

Edit: you could probably stick with your current brakes. Just get them some new pads and give them a bleed. Maybe replace the seals if they need it.